Khloe Kardashian hired an entire glam squad to get ready for a date with James Harden. Here, she arrives at the American Music Awards in Los Angeles, Nov. 23, 2014. Photo: Reuters/Danny Moloshok

Khloe Kardashian is hitting back at her ex-husband and all the haters who have been calling her “the fat one” all her life. She posed for the September issue of Women’s Health magazine, where she’s showing off her "revenge body."

On the cover photo, Khloe is wearing only a pair of black panties. She’s also got a denim boyfriend shirt that’s trying to hide her hot new body, but it’s failing miserably. The wide open gap in front is showing off her tight abs and ample cleavage. This is Khloe’s revenge body. Revenge against whom? Her ex-husband Lamar Odom.

“Yeah, it’s a revenge body. But it’s just as much for all my critics who called me ‘the fat one’ for my entire existence,” she said. Kardashian explained that she started to get into fitness about three years ago, when she was facing a hard time in her failed marriage.

"I was having a hard time with Lamar. It was toward the end of our union, and there was so much drama. I needed a release,” she said. She and the former NBA star were married in 2009 but she filed for divorce in December 2013. The divorce dragged on for nearly two years before they both finally signed the papers last month.

Khloe also explained that she did it to silence everyone who’s been calling her “the fat one.” Khloe is part of the world-famous Kardashian-Jenner clan whose members include supermodel Kendall Jenner and international superstar Kim Kardashian. With her family constantly in the spotlight, the inevitable comparisons have led others to call her “the fat one.” Part of the reason is that she naturally has a larger frame. At 5-foot-11, she is nearly a foot taller than her sisters Kourtney and Kim.

Last week, Khloe also fired back at haters who have been claiming that her new svelte frame is the result of Photoshop editing. She posted an unedited version of a photo that appears in Complex magazine to prove her point.

On her Instagram account, Khloe has been documenting her regular workout sessions. The paparazzi have also been snapping tons of photos of her coming in and out of the gym. Khloe’s secret to a sexy new body? There’s no shortcut, girls. It’s all about a healthy lifestyle and lots of exercise.